Include Dragons with death triggers or recursion, so sacrifices generate value beyond the initial damage
If luck is on your side, you can power your way through most battles, and even if you land a tails, 160 HP means Bastiodon is already difficult to take down
While Imps Mischief is in some ways better, because it gives a Deflecting Swat effect to Black, its also nearly $30, and not worth it unless youre playing at the highest power levels in which case youre probably playing red and/or blue anyways, defeating the purpose
While there have been plenty of solid three-cost land destruction spells over the years (and almost entirely in the nineties), Sinkhole was the only really good one for two-mana
Do you have a bunch of them